Conveys the placement of Union and Confederate forces in Washington County, Md., around Sharpsburg during the Battle of Antietam on September 17, 1862.

Covers parts of Pennsylvania, Maryland, and Virginia, focusing on the Gettysburg area south through Sharpsburg and Frederick City, Md., and ending around Harpers Ferry, Va. [now W.Va.]. At the end of June 1863, Union and Confederate troops were moving towards Gettysburg, Pa. The conflict at Gettysburg was fought July 1-3 with Confederate troops retreating south after that time. Sneden includes dates at various locations ...